rumored spec with almost certain release next week at photokina:
•Very small and lightweight body
•16 bit image processing
•Expeed 3 processor
•Maximum video recording: 30 minutes
•Built-in mic
•19 scene modes
•Magnesium alloy only on top and back only
•Maximum shutter speed of 1/4000
•Shutter life: 150,000 cycles (the D800 is rated for 200,000 cycles)
Previously reported Nikon D600 specs:
•24.7MP full frame sensor
•Weight: 760g (850g with battery and memory cards), the D800 weights 900g
•3.2" LCD with 921K dot with ambient sensor control
•HDMI output
•Video compression: H264/MPEG-4
•Full HD with 30p, 25p, 24p, HD with 60p, 50p, 30p, 25p
•Viewfinder coverage: 100%
•The Nikon D600 will have built-in AF motor
•The body most probably will be weather sealed
•The D600 will not have built-in GPS
•ISO range: 100-6400 (with Lo-1 ISO 50 and Hi-2 ISO 25,600)
•39 AF points (with an option of 11 AF points), 9 cross-type AF points
•AF face detection
•Exposure compensation: ±5 EV (same as the D800)
•The D600 will probably use the EN-EL15 rechargeable Li-ion battery
•5 fps (same as the D700, the D800 has 4fps)
•2 SD card slots with Eye-fi support
•Build-in retouching images functionality
•Built-in flash with sync speed of 1/250s
•Two user settings: U1 and U2
•Fn button
•Auto DX crop mode
•In-camera RAW editor
•Built in time-lapse functionality
•Build-in HDR
•New external battery grip
•Internal AF motor
•The price of the D600 is rumored to be very low - maybe as low as $1500
•Announcement before Photokina (September 2012)
Read more on NikonRumors.com:
http://nikonrumors.com/2012/08/30/updated-specifications-for-the-nikon-d600.aspx/#ixzz26UiSCAwV